John miesoh



J. MIESGH.

Jacquard Machine.-

Patented Mar. 23', 1880.

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UNITED STATES PATENT OFFICE.

JOHN MIESOH, OF PATERSON, NEW JERSEY, ASSIGNOR TO GEORGE F. KEOK AND GEORGE FISCHER, OF NEW YORK, N. Y.

JACQUARD MACHINE.

SPECIFICATION forming part of Letters Patent No. 225,852, dated March 23, 1880.

Application filed February 20, 1878.

To all whom it may concern:

Be it known that I, JOHN MIEsoH, of Paterson, in the county of Passaic and State of New Jersey, have invented a new and useful Improvement in Jacquard Machines, which improvement is fully set forth in the following specification, reference being had to the accompanying drawings, in which Figure 1 represents a longitudinal vertical section in the plane a 00, Fig. 2. Fig. 2 is a horizontal section in the plane y y, Fig.1.

Similar letters indicate corresponding parts.

This invention consists in the combination, with the pattern-cylinder and with the jacks, of a secondary cylmder and a series of stops, which engage with the jacks and are disengaged by the pattern-chain working on the secondary cylinder, so that each jack, after having been raised, remains in its elevated position until its stop is released by the secondary cylinder.

In the drawings, the letter A designates the frame of my J acquardmachine, which is secured to the frame of a loom in the manner indicated in Fig. 1. This frame forms the bearings for a rock-shaft, B, from which extend two pairs of arms, 0 D, the arms 0 serving to support the knife E, while the arms D transmit the motion of the rock-shaft B to two carriages, F G, which move in suitable guides provided for them on the frame A.

The rock-shaft B receives its motion from the main shaft of the loom by crank and pitman, or any other suitable connection.

In the present instance I have shown the rock-shaft B as having an arm, B, to which is pivoted a connecting-link or pitman, G, eX- tending downward and connected by acrankpin, d, on a disk carried by the crankshaft D, which will be understood to receive rotary motion by bevel-gear or other connection with the main shaft of the loom.

The carriages F G are connected by rods to I) to the opposite ends of arms 0, which are firmly secured to a rock-shaft, 01, mounted in the main frame A. The arms D of the rockshaft B are connected to the arms a by pivots 0. By this arrangement a reciprocating motion is imparted to the carriages F G in opposite directions, one carriage moving upward while the other moves downward, and vice versa.

In the lowerend of thecarriage Fis mounted a cylinder, H, which supports the pattern chain or cards, and which is turned one quarter of a revolution for every stroke of its carriage. On the end of the shaft H is atoothed or ratchet wheel, one of the teeth of which strikes the hook h every time the carriage F is lowered after being raised. The toothed or ratchet wheel is not shown in the drawings, but its location and action will be readily understood. The pattern-cards act on needles I, which are suspended, by means of lohg loops 9, from pins f, secured in a cross-bar, J, of the main frame A. Each of these needles is connected to one of the jacks K, the outer ends of which are provided with hooks h, and which, when allowed to follow their inherent gravity, bear down upon the knife E. In the example shown in the drawings said jacks are placed in a horizontal position, and each of them connects to a treadle, L, which is connected to one of the heddle-frames in a loom, as indicated in Fig. 1. If desired, however, the jacks may be placed in a vertical position and pressed toward the knife by means of springs, and each jack may be connected to a sin gle warp-thread or to a heddle-frame c011- taining a number of warp-threads.

In the lower end of the carriage G is secured the secondary cylinder M, which also carries a pattern chain or cards, and is turned onequarter of a revolution for every stroke of its carriage, a toothed 0r ratchet wheel on the end of the cylinder M being acted upon by a hook, h, in the same manner that hook it operates to turn cylinder H, as heretofore described. The pattern-cards of this secondary cylinder act on needles N, which are sus' pended, by long loops 6, from pins j, secured in a cross-bar, O, of the main frame A. Each of these needles connects with one of a series of stops, P, which swing on a rod, Q, secured in the main frame, and which engage with shoulders it, formed on the jacks. If one of the jacks is raised by the action of the knife E the corresponding stop catches behind its shoulder and prevents it from dropping back. so that the thread or heddle-framc connected to said jack will remain raised until the stop of said lifter is forced back.

The position of the needles N is controlled by the pattern-cards of the secondary cylinder, and all the jacks which have been raised by the action of the knife will remain raised for any desired number of picks until their stops are thrown back by the card of the secondary cylinder.

In the example shown by the drawings the stops P are in a horizontal position, and they rest upon the backs of the jacks by their inherent gravity. If the jacks and stops are placed in a vertical position both the stops and the jacks must be exposed to the action of springs. The stops, instead of acting; on the jacks, may also be so arranged that they engage with hooks or other equiy'alent means secured to the treadles without changing the efl'ect of my invention.

The great advantage of my invention will be readily appreciated by weavers. By retaining those jacks, which otherwise would have to be raised for several picks in succession in elevated position during any desired number of picks the power necessary to raise such jacks repeatedly in succession is saved, and the wear and tear of the working mechanism is materially reduced.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination, in a Jacquard machine, with the jacks and a series of stops, of the main pattern-cylinder, its series of needles for controlling the lifting of the jacks, a secondary pattern-cylinder, and a series of needles for controlling the lifting of the stops, said stops being arranged to hold or release the jacks according to the position of. said stops as governed by the secondary pattern-cylinder, substantially as described.

2. The combination, with the main patterncylinder H, of jacks K, having shoulders 70, needles 1, stops P, needles N, and the secondary pattern-cylinder M, substantially as described.

In testimony that I claim theforegoing I have hereunto set my hand and seal this 13th day of February, 1878.

JOHN MIESGH. [L. s.] Witnesses:

W. HAUFF, E. F. KASTENHUBER. 

